Not tasted: Sanpin tea
Not served: Okinawa soba. Umibudo. Tofuyo. Asa soup. And of course, Taco Rice, a hybrid result of army occupation (Okinawa once boasted the majority of America's occupying army bases, explaining the popularity of karate stateside) that skews more Hawaiian than Japanese. And finally a mascot, its exact purpose unexplained, although I imagine it may have served some actual municipal function.